The S&P 500 and Dow rose modestly to record highs on Friday following a strong US jobs report and positive data for Pfizer's experimental pill to fight Covid-19.
But stocks were off their session highs in afternoon trade, with the Nasdaq turning negative, as shares of healthcare and some tech and stay-at-home stocks weighed.
The Labor Department report showed U.S. employment increased more than expected in October as the headwind from the surge in COVID-19 infections over the summer subsided.
A trial of Pfizer Inc's experimental antiviral pill for COVID-19 was stopped early after the drug was shown to cut by 89% the